layer for the astronauts is the mark-iii prototype spacesuit and would be attach to the rover and the astronauts slip in before they walk out on the surface and it is complicated. slide in. man. you need to pull the loops up. and over here. reporter: not exactly. easy to get into this thing. reporter: fun times down there and that is a very complicated spacesuit and the future design is on the outside of the lander. and that way, when the astronauts go out, roaming around and where there is an asteroid or mars and less likely the moon, they will not be bringing all of the dust back into their capsule which was a problem in the 1970s during all of those apollo missions and the big task on tonight s spacewalk will be removing all of the protective lids and insulation